I have a 17ft triton vt17 aluminum boat. It has a 50hp mercury 2 stroke on it. When I purchased the boat it had a 3 blade 12 pitch prop. It would do 30 mph with 2 people and gear at 6k rpm. Max rated rpm is 5500. I raised the motor to the top hole and went to a 14 pitch prop. I run about 37mph now at 5300. I cannot get the motor trimmed up enough to ventilate the prop before it porpoises badly. I believe the stern is so heavy on this boat because there is no weight in front of the boat. Seems to ride deeper than it should on plane. I have heard of bow lift,stearn lift and standard props. I believe I am in need of a sternlifting prop or possibly a jack plate I believe. Is there anything else I am missing here? Not sure of the science behind these props or if thats even what I need. Just trying to get the most out of my setup.